add simple pubsub test

test/src/Battle.js

@@ -0,0 +1,80 @@
+var Battle = (function(){
+  var Battle = function(){
+    if(!(this instanceof Battle)){
+      return (new Battle());
+    }
+    /**
+     * constructor here
+     */
+
+    this.events = {};
+
+
+  };
+  var r = Battle.prototype;
+  /**
+   * methods && properties here
+   * r.property = null;
+   * r.getProperty = function() {...}
+   */
+
+  r.events = null;
+
+  r.runEvent = function(eventid, ctx, args){
+    ctx = ctx || this;
+    args = args || [];
+    var event = "on" + eventid;
+
+    if(!this.events[event]){
+      return;
+    }
+    this.events[event].forEach(function(e){
+      var obj = e;
+      obj.cb = obj.cb.bind(ctx)
+      obj.cb.apply(ctx, obj.onArgs.concat(args));
+    });
+  }
+
+  r.on = function(eventid, cb, ctx, args){
+    ctx = ctx || null;
+    args = args || [];
+    var event = "on" + eventid;
+
+    var obj = {};
+    if(!ctx) {
+      obj.cb = cb;
+    } else {
+      obj.cb = cb.bind(ctx);
+    }
+    obj.onArgs = args;
+
+    if(!(event in this.events)){
+      this.events[event] = [];
+    }
+
+    if(typeof cb !== "function"){
+      throw new Error("cb not a function");
+    }
+
+    if(args){
+      this.events[event].push(obj);
+    }
+
+    else {
+      this.events[event].push(obj);
+    }
+  }
+
+  r.off = function(eventid){
+    var event = "on" + eventid;
+    this.events[event].forEach(function(e){
+      e = null;
+    });
+    delete this.events[event];
+  }
+
+
+  return Battle;
+})();
+
+module.exports = Battle;